idlers-agent/agent.py

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import os
import urllib.request
import logging
import json
import http.client
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import subprocess
import re
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import shutil
NON_UPDATABLE_KEYS = [
'server_type',
'os_id',
'provider_id',
'location_id',
'ssh_port',
'bandwidth',
'was_promo',
'active',
'owned_since',
'currency',
'price',
'payment_term',
'next_due_date',
'ip1'
]
class ServerData:
def __init__(self):
self.hostname = os.uname().nodename
self.public_ip = self.get_public_ip()
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self.dmidecode_data = self.parse_dmidecode_output()
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self.hdparm_data = self.parse_hdparm_output()
logging.basicConfig(level=logging.INFO)
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def parse_dmidecode_output(self):
'''
Example dmidecode output:
Handle 0x0069, DMI type 20, 35 bytes
Memory Device Mapped Address
Starting Address: 0x00600000000
Ending Address: 0x007FFFFFFFF
Range Size: 8 GB
Physical Device Handle: 0x0067
Memory Array Mapped Address Handle: 0x006A
Partition Row Position: Unknown
Interleave Position: 2
Interleaved Data Depth: 2
Handle 0x006A, DMI type 19, 31 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x007FFFFFFFF
Range Size: 32 GB
Physical Array Handle: 0x005E
Partition Width: 4
'''
if os.path.isfile('/usr/sbin/dmidecode'):
try:
# ignore error messages produced by the command
output = subprocess.check_output(['sudo', '/usr/sbin/dmidecode'], stderr=subprocess.DEVNULL).decode('utf-8')
# each section is separated by two newlines
sections = output.split('\n\n')
parsed_sections = []
for section in sections:
# each line in a section is separated by a newline
lines = section.split('\n')
# first line contains the DMI type - only need number
match = re.search(r'DMI type (\d+)', lines[0])
if match:
dmi_type = int(match.group(1))
else: # skip if no DMI type in this section
continue
# each section is a dictionary with DMIType as key
section_dict = {'DMIType': dmi_type}
if len(lines) > 1:
section_dict['description'] = lines[1].strip()
for line in lines[2:]: # skip first two lines - already processed
# each line has tabs at the beginning and space(maybe optional) between key and value
match = re.match(r'\t(.+):\s*(.*)', line)
if match:
key, value = match.groups()
section_dict[key] = value
parsed_sections.append(section_dict)
return parsed_sections
except subprocess.CalledProcessError:
pass
return []
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def parse_hdparm_output(self):
devices = {}
# Check if hdparm exists
if shutil.which('hdparm') is None:
logging.error("hdparm not found")
return devices
# Get the list of devices
try:
device_list = subprocess.check_output(['lsblk', '-d', '-o', 'NAME'], stderr=subprocess.STDOUT, universal_newlines=True).split()[1:]
except subprocess.CalledProcessError as e:
logging.error("Failed to get device list: {}".format(e))
return devices
for device in device_list:
# Only get details of devices that start with 'sd': sda, sdb, etc.
if not device.startswith('sd'):
continue
device = '/dev/' + device
try:
# Get the output
output = subprocess.check_output(['hdparm', '-I', device], stderr=subprocess.STDOUT, universal_newlines=True)
except subprocess.CalledProcessError as e:
logging.error("Failed to get hdparm output for {}: {}".format(device, e))
continue
# Parse the output
details = {}
details['model_number'] = re.search(r'Model Number:\s*(.*)', output).group(1)
details['serial_number'] = re.search(r'Serial Number:\s*(.*)', output).group(1)
details['firmware_revision'] = re.search(r'Firmware Revision:\s*(.*)', output).group(1)
details['transport'] = re.search(r'Transport:\s*(.*)', output).group(1)
details['checksum'] = re.search(r'Checksum:\s*(.*)', output).group(1)
details['buffer_size'] = re.search(r'cache/buffer size\s*=\s*(.*)', output).group(1)
details['form_factor'] = re.search(r'Form Factor:\s*(.*)', output).group(1)
devices[device] = details
return devices
def get_ram_and_disk(self):
# RAM information
with open('/proc/meminfo', 'r') as f:
meminfo = f.read()
ram = int([x for x in meminfo.split('\n') if 'MemTotal' in x][0].split()[1]) // 1024
# Disk space information
disk = 0
for device in os.listdir('/sys/block'):
device_path = '/sys/block/{}/device'.format(device)
size_path = '/sys/block/{}/size'.format(device)
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if not os.path.islink(device_path):
continue
try:
with open(size_path, 'r') as f:
size = int(f.read().strip())
disk += size
except Exception:
pass
disk = disk * 512 // (1024**3) # convert to GB
logging.info("RAM: {}MB, Disk: {}GB".format(ram, disk))
return ram, disk
def get_cpu_count(self):
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cpu_count = 0
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for section in self.dmidecode_data:
if section['DMIType'] == 4: # 4 corresponds to processor
core_count = int(section.get('Core Count', '0'))
thread_count = int(section.get('Thread Count', '0'))
cpu_count = core_count * thread_count
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if cpu_count == 0:
with open('/proc/cpuinfo', 'r') as f:
cpuinfo = f.read()
cpu_count = cpuinfo.count('processor')
logging.info("CPU Count: {}".format(cpu_count))
return cpu_count
def get_bandwidth(self):
bandwidth = 2000
logging.info("Bandwidth: {}".format(bandwidth))
return bandwidth
def get_public_ip(self):
try:
response = urllib.request.urlopen('https://api.ipify.org')
return response.read().decode()
except Exception as e:
logging.error("Failed to get public IP: {}".format(e))
return '127.0.0.1'
def get_os(self):
os_id = 27
logging.info("OS ID: {}".format(os_id))
return os_id
def create_post_data(self):
ram, disk = self.get_ram_and_disk()
post_data = {
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"server_type": 1,
"os_id": self.get_os(),
"provider_id": 10,
"location_id": 15,
"ssh_port": 22,
"ram": ram >> 10, # convert to GB
"ram_as_mb": ram, # in MB
"disk": disk, # in GB
"disk_as_gb": disk, # in GB
"cpu": self.get_cpu_count(),
"bandwidth": self.get_bandwidth(),
"was_promo": 1,
"active": 1,
"show_public": 0,
"owned_since": "2022-01-01",
"ram_type": "GB",
"disk_type": "GB",
"currency": "USD",
"price": 4,
"payment_term": 1,
"hostname": self.hostname,
"next_due_date": "2022-02-01",
"ip1": self.public_ip,
}
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logging.info("Post data created")
return post_data
def create_note_data(self):
chassis_info = None
for section in self.dmidecode_data:
if section['DMIType'] == 1:
chassis_info = section
break
if chassis_info:
chassis_model = chassis_info.get('Product Name', 'Unknown')
chassis_serial = chassis_info.get('Serial Number', 'Unknown')
else:
chassis_model = chassis_serial = 'Unknown'
processor_info = [section for section in self.dmidecode_data if section['DMIType'] == 4]
processor_model = processor_info[0].get('Version', 'Unknown') if processor_info else 'Unknown'
processor_count = len(processor_info)
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ram_info = [section for section in self.dmidecode_data if section['DMIType'] == 17]
ram_details = []
for ram in ram_info:
size = ram.get('Size', 'Unknown')
speed = ram.get('Speed', 'Unknown')
configured_speed = ram.get('Configured Memory Speed', 'Unknown')
total_width = int(ram.get('Total Width', "0").split()[0])
data_width = int(ram.get('Data Width', "0").split()[0])
ecc = 'Yes' if total_width > data_width else 'No'
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serial_number = ram.get('Serial Number', 'Unknown')
ram_type = ram.get('Type', 'Unknown')
ram_details.append("Size: {}, Speed: {} @ {}, ECC: {}, Serial Number: {}, Type: {}".format(size, speed, configured_speed, ecc, serial_number, ram_type))
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# SATA Storage media
sata_details = []
for device, details in self.hdparm_data.items():
sata_details.append("Device: {}, Model: {}, Serial: {}, Checksum: {}, Buffer Size: {}, Form Factor: {}".format(
device, details['model_number'], details['serial_number'], details['checksum'], details['buffer_size'], details['form_factor']))
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note = "Chassis Model: {} | Serial Number: {} ||| Processor Model: {} | Count: {} ||| RAM Details: {} ||| SATA Details {}".format(
chassis_model, chassis_serial, processor_model, processor_count, ' | '.join(ram_details), ' | '.join(sata_details))
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note_data = {
'note': note,
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}
return note_data
class ServerManager:
def __init__(self, host, api_key):
self.host = host
self.api_key = api_key
self.headers = {
'Content-Type': 'application/json',
'Authorization': 'Bearer ' + self.api_key,
}
logging.basicConfig(level=logging.INFO)
def send_request(self, method, endpoint, data=None):
url = self.host + endpoint
payload = json.dumps(data).encode('utf-8') if data else None
req = urllib.request.Request(url, data=payload, headers=self.headers, method=method)
try:
with urllib.request.urlopen(req) as response:
if method == 'GET':
return json.loads(response.read().decode())
else:
return response.read().decode()
except urllib.error.HTTPError as e:
logging.error("Request failed with {}".format(e))
raise
def get_existing_servers(self):
return self.send_request('GET', '/api/servers')
def get_note(self, service_id):
return self.send_request('GET', '/api/notes/' + str(service_id))
def create_note(self, post_data):
logging.info("Creating note...")
return self.send_request('POST', '/api/notes', post_data)
def update_note(self, post_data, service_id):
logging.info("Updating note with id {}...".format(service_id))
return self.send_request('PUT', '/api/notes/' + str(service_id), post_data)
def create_server(self, post_data):
logging.info("Creating server...")
return self.send_request('POST', '/api/servers', post_data)
def update_server(self, post_data, server_id):
# remove following keys from post_data
for key in NON_UPDATABLE_KEYS:
post_data.pop(key, None)
logging.info("Updating server with id {}...".format(server_id))
return self.send_request('PUT', '/api/servers/' + str(server_id), post_data)
def existing_server_id(self, post_data):
existing_servers = self.get_existing_servers()
for server in existing_servers:
if server['hostname'] == post_data['hostname']:
return server['id']
return None
def upsert_server(self, post_data):
server_id = self.existing_server_id(post_data)
if server_id:
logging.info('Server already exists with id: {}, Updating...'.format(server_id))
response = self.update_server(post_data, server_id)
else:
logging.info('Server does not exist, Creating...')
response = self.create_server(post_data)
# Extract the server_id from the response
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server_id = json.loads(response).get('server_id', None)
if server_id is None:
logging.error('Failed to get server_id from response: {}'.format(response))
raise ValueError('Failed to get server_id from response')
return server_id
def upsert_note(self, note_data, server_id):
note_data['service_id'] = server_id
try:
note = self.get_note(server_id)
except urllib.error.HTTPError:
note = None
if note:
return self.update_note(note_data, server_id)
else:
return self.create_note(note_data)
def validate_env_vars():
api_key = os.getenv('AGENT_API')
host = os.getenv('HOST')
if not api_key:
raise Exception('AGENT_API not found in environment variables')
if not host:
raise Exception('HOST not found in environment variables')
return host, api_key
def main():
logging.basicConfig(level=logging.INFO)
host, api_key = validate_env_vars()
server_data = ServerData()
post_data = server_data.create_post_data()
server_manager = ServerManager(host, api_key)
server_id = server_manager.upsert_server(post_data)
logging.info('Server id: {}'.format(server_id))
note_data = server_data.create_note_data()
server_manager.upsert_note(note_data, server_id)
if __name__ == '__main__':
main()